... , GB, JISMaterialSS400, Q 235B,S235JR,Q345B, S355JRBrandJINXI ,MA STEEL,LAI WU ,RI ZHAO,TANG STEELTechnique1.Hot rolled 2.WeldedApplication1.Industrial structure of ... and retaining structure 3.Petrochemical and electric power and other industrial equipment structure 4.Large span steel bridge components 5.Ships, machinery ...